Topic: Islamic State video purports to show beheading of U.S. journalist

By Alexander Dziadosz and Michael Georgy BAGHDAD (Reuters) - Islamic State insurgents posted a video on Tuesday purportedly showing the beheading of U.S. The video, titled "A Message To America," presented President Barack Obama with bleak options that could define America’s next phase of involvement in Iraq and the public reaction to it, potentially deepening his hand in a conflict he built much of his presidency on ending.